This study analyzes different ways of representing vaguely defined places from a set of sketch ma... more This study analyzes different ways of representing vaguely defined places from a set of sketch maps specifically when used in giving route instructions. A total of 30 participants who are familiar with the study area were asked to sketch a route map consisting of pre-identified set of places. The task involved two groups: intra-city route and inter-city route. Sketch maps were analyzed using a previously developed classification scheme to investigate how places with unclear spatial extent are represented. These were then classified into different category of places: district, site and neighborhood. Results showed that labels and regular shapes are the most preferred, as opposed to other types of sketch representations, regardless of the category of place. It also occurred that a specific place can be classified under one or more categories, which influences the type of sketch representation used.
A longitudinal study on Anopheles mosquito larval abundance in distinct geographical and environm... more A longitudinal study on Anopheles mosquito larval abundance in distinct geographical and environmental settings in western Kenya
Exploring the Visual Landscape is about the combination of landscape research and planning, visua... more Exploring the Visual Landscape is about the combination of landscape research and planning, visual perception and Geographic Information Science. It showcases possible ways of getting a grip on themes like: landscape openness, cluttering of the rural landscape, high-rise buildings in relation to cityscape, historic landscapes and motorway panoramas. It offers clues for visual landscape assessment of spaces in cities, parks and rural areas. In that respect, it extends the long tradition in the Netherlands on physiognomic landscape research and shows the state of the art at this moment. Exploring the Visual Landscape offers important clues for theory, methodology and application in research and development of landscapes all over the world, from a specifically Dutch academic context. It provides a wide range of insights into the psychological background of landscape perception, the technical considerations of geomatics and methodology in landscape architecture, urban planning and desig...
Visual landscape research is an interdisciplinary approach important for landscape and urban plan... more Visual landscape research is an interdisciplinary approach important for landscape and urban planning. This field of research integrates: (1) landscape planning, design and management concepts, (2) landscape perception approaches, and (3) GISc-based methods and techniques in order to map the visual landscape. It offers possible ways of getting a grip on themes like: landscape openness, cluttering of the rural landscape, high-rise buildings in relation to cityscape, historic landscapes and motorway panoramas. This article is an introduction to the field of visual landscape research and provides an overview of the different perspectives on the subject. It provides, from a specific Dutch academic context, important clues for theory, methodology and application in research and development of landscapes all over the world. It offers clues for visual landscape assessment of spaces in cities, parks and rural areas. This article provides a wide range of insights into the psychological backg...
Geomatics is a technology and service sector focussing on the acquisition, storage, analysis and ... more Geomatics is a technology and service sector focussing on the acquisition, storage, analysis and management of geographically referenced information for improved decision-making. Landscape physiognomic and research –and its GI science application. The geomatics developments since 40 years confront us with many new algorithms and a variety of geo data. Due to these the interest in physiognomic research has been increased. This article links the variety of geodata and its processing functions to the landscape physiognomic research framework. This link is based on an overview of the geo data, the intended applications in landscape physiognomic research and the functions to perform. The article provides an overview of geographical data using/driving methods and applications that may support physiognomic landscape research that longs from methods that rely on geo-data that ranges from a administratively defined (INSPIRE), professional experiment acquired up to collected by volunteers. T...
This paper presents the simulation of a social media approach to assess village domestic water se... more This paper presents the simulation of a social media approach to assess village domestic water services coverage by using a combination of known methods to capture placeholders. Placeholder is location based information given by local people who are familiar with a specific area due to a longer period of living in, using and managing that area. Placeholders as such represent experiences and perceptions of local people. This simulation has been realized during 2011-2012 in the Kondoa district of Dodoma region Tanzania to find out in what way local communities may support water services given the options of upcoming mobile technologies. Simulation has been done by collecting data through sketch mapping, geocoded transect walk, focus group discussion and cross-checked by interviews. Results of the simulation show that this type of community water service mapping supports collection and validation of relevant, accurate and representative information on water service coverage at village ...
The book is the second volume in the Research in Urbanism Series of IOS Press and is about the co... more The book is the second volume in the Research in Urbanism Series of IOS Press and is about the combination of landscape research and planning, visual perception and Geographic Information Science. It offers clues for visual landscape assessment of spaces in cities, parks and rural areas. In that respect, it extends the long tradition in the Netherlands on physiognomic landscape research and shows the state of the art at this moment. ‘Exploring the Visual Landscape’ offers important clues for theory, methodology and application in research and development of landscapes all over the world, from a specifically Dutch academic context. It showcases possible ways of getting a grip on themes like: landscape openness, cluttering of the rural landscape, high-rise buildings in relation to cityscape, historic landscapes and motorway panoramas. ‘Exploring the Visual Landscape’provides a wide range of insights into the psychological background of landscape perception, the technical consideration...
In this paper we present the outline and usability of Google Earth visualization of Sustainable O... more In this paper we present the outline and usability of Google Earth visualization of Sustainable Outlook (GESO), a tool to prepare a multi-layered visualization of land use changes. The land use changes are the results future outlook studies of the Netherlands Environmental Assessment Agency. GESO aims an effective, easy and low cost way to study Sustainable Outlook data via an interactive 3D visualization that integrates the land use icon and landscape feature approach as presented in previous studies. The concept, implementation and usability of GESO are explained, concluded and discussed. The paper starts to explain the context of GESO and the intention to visualize 3-dimensionally land use changes (Al-Kodmany, 2001; Borsboomvan Beurden, 2006; Lammeren, 2005). Out of this context the concept of GESO architecture is presented. Amongst other functions it combines two Dutch authorized datasets, national DEM and the national topography, into a semi-3D dataset. Secondly the tool transf...
Journal of the American Mosquito Control Association, 2020
ABSTRACTThe detection of Aedes albopictus in Lucky bamboo (Dracaena sanderiana) greenhouses and A... more ABSTRACTThe detection of Aedes albopictus in Lucky bamboo (Dracaena sanderiana) greenhouses and Ae. atropalpus at used tire importers illustrates that the Netherlands is exposed to the risk of introductions of invasive mosquito species (IMS). In this study we implemented a risk-based and adaptive surveillance (2010–16) in order to detect introductions and prevent potential proliferation of IMS at these locations. Results at Lucky bamboo greenhouses show that interceptions of Ae. albopictus occurred every year, with 2010 and 2012 being the years with most locations found positive for this species (n = 6), and 2015 the year with the highest percentage of positive samples (4.1%). Furthermore, our results demonstrate that Ae. japonicus can also be associated with the import of Lucky bamboo. At used tire companies, IMS were found at 12 locations. Invasive mosquito species identified were Ae. albopictus, Ae. atropalpus, Ae. aegypti, and Ae. japonicus, of which Ae. albopictus has been foun...
Applying underwater released exhaust gas as air lubrication along the ship hull to reduce the ene... more Applying underwater released exhaust gas as air lubrication along the ship hull to reduce the energy consumption is under development. However, this direct emission to the water could pose a risk to the local marine environment, especially in shipping-dense areas. Specifically, CO2, a dominant component in the exhaust gas, has the potency to enhance algal blooms and cause acidification. This study provides the first relative risk assessment of ships with underwater release exhaust gas systems on a global scale, taking into account local water conditions and shipping intensity. Risk was characterized for 262 marine ecoregions by plotting the expected CO2 emission from ships to water against the estimated vulnerability to acidification and algal blooms. The vulnerability of each ecoregion was assessed based on background dissolved inorganic carbon (DIC) level, chlorophyll-a concentrations and total alkalinity. The results reveal that areas with relatively high vulnerability are mainly...
BackgroundIn the Netherlands, Aedes albopictus has been found each year since 2010 during routine... more BackgroundIn the Netherlands, Aedes albopictus has been found each year since 2010 during routine exotic mosquito species surveillance at companies that import used tires. We developed habitat suitability models to investigate the potential risk of establishment and spread of this invasive species at these locations. MethodsWe used two methodologies: first, a species distribution model based on the maximum entropy modelling approach (MaxEnt) taking into consideration updated occurrence data of the species in Europe, and second, a spatial logic conditional model based on the temperature requirements of the species and using Land Surface Temperature data (LST model). For model output comparison, we extracted the results of both models accordingly to the spatial extent of the Netherlands. ResultsResults obtained with the MaxEnt model at European level accurately reflect the observed current distribution of the species and also depicts moderately low values in parts of the Netherlands, ...
Abstract Agricultural extension in sub-Saharan Africa has often been criticised for its focus on ... more Abstract Agricultural extension in sub-Saharan Africa has often been criticised for its focus on linear knowledge transfer, and limited attention to systemic approaches to service delivery. Currently, the region is experiencing a new-ICT revolution and there are high expectations of new-ICTs to enhance interaction and information exchange in extension service delivery. Using an innovation systems perspective, we distinguish the roles demand-articulation, matching demand and supply, and innovation process management for innovation-intermediaries. The study explores literature on how new-ICT may support these roles, with specific interest in the possibilities of environmental monitoring and new forms of organisation enabled by enhanced connectivity. In order to contribute to the understanding of this area, the paper reports on a comparative study of two new-ICT platforms embedded in Ghanaian public and private extension organisations respectively. We assess the roles that these platforms (aim to) support, and document achievements and constraints based on interviews with extension staff and farmers. The findings indicate that while both platforms aim to support innovation-intermediation roles the focus areas and level of detail differ due to diverging organisational rationales to service delivery. In addition, we see that new-ICTs' potential to support innovation-intermediation roles is far from realised. This is not due to (new) ICTs lacking the capacity to link people in new ways and make information accessible, but due to the wider social, organisational and institutional factors that define the realisation of their potential. Therefore, more conventional modes of interaction around production advice and also credit provision continue to be dominant and better adapted to the situation. However, beyond the two platforms that were developed specifically by and for the extension organisations, there were indications that more informal and self-organised new-ICT initiatives can transform and enhance interaction patterns in innovations systems to achieve collective goals through standard virtual platforms such as WhatsApp and Telegram.
This study analyzes different ways of representing vaguely defined places from a set of sketch ma... more This study analyzes different ways of representing vaguely defined places from a set of sketch maps specifically when used in giving route instructions. A total of 30 participants who are familiar with the study area were asked to sketch a route map consisting of pre-identified set of places. The task involved two groups: intra-city route and inter-city route. Sketch maps were analyzed using a previously developed classification scheme to investigate how places with unclear spatial extent are represented. These were then classified into different category of places: district, site and neighborhood. Results showed that labels and regular shapes are the most preferred, as opposed to other types of sketch representations, regardless of the category of place. It also occurred that a specific place can be classified under one or more categories, which influences the type of sketch representation used.
A longitudinal study on Anopheles mosquito larval abundance in distinct geographical and environm... more A longitudinal study on Anopheles mosquito larval abundance in distinct geographical and environmental settings in western Kenya
Exploring the Visual Landscape is about the combination of landscape research and planning, visua... more Exploring the Visual Landscape is about the combination of landscape research and planning, visual perception and Geographic Information Science. It showcases possible ways of getting a grip on themes like: landscape openness, cluttering of the rural landscape, high-rise buildings in relation to cityscape, historic landscapes and motorway panoramas. It offers clues for visual landscape assessment of spaces in cities, parks and rural areas. In that respect, it extends the long tradition in the Netherlands on physiognomic landscape research and shows the state of the art at this moment. Exploring the Visual Landscape offers important clues for theory, methodology and application in research and development of landscapes all over the world, from a specifically Dutch academic context. It provides a wide range of insights into the psychological background of landscape perception, the technical considerations of geomatics and methodology in landscape architecture, urban planning and desig...
Visual landscape research is an interdisciplinary approach important for landscape and urban plan... more Visual landscape research is an interdisciplinary approach important for landscape and urban planning. This field of research integrates: (1) landscape planning, design and management concepts, (2) landscape perception approaches, and (3) GISc-based methods and techniques in order to map the visual landscape. It offers possible ways of getting a grip on themes like: landscape openness, cluttering of the rural landscape, high-rise buildings in relation to cityscape, historic landscapes and motorway panoramas. This article is an introduction to the field of visual landscape research and provides an overview of the different perspectives on the subject. It provides, from a specific Dutch academic context, important clues for theory, methodology and application in research and development of landscapes all over the world. It offers clues for visual landscape assessment of spaces in cities, parks and rural areas. This article provides a wide range of insights into the psychological backg...
Geomatics is a technology and service sector focussing on the acquisition, storage, analysis and ... more Geomatics is a technology and service sector focussing on the acquisition, storage, analysis and management of geographically referenced information for improved decision-making. Landscape physiognomic and research –and its GI science application. The geomatics developments since 40 years confront us with many new algorithms and a variety of geo data. Due to these the interest in physiognomic research has been increased. This article links the variety of geodata and its processing functions to the landscape physiognomic research framework. This link is based on an overview of the geo data, the intended applications in landscape physiognomic research and the functions to perform. The article provides an overview of geographical data using/driving methods and applications that may support physiognomic landscape research that longs from methods that rely on geo-data that ranges from a administratively defined (INSPIRE), professional experiment acquired up to collected by volunteers. T...
This paper presents the simulation of a social media approach to assess village domestic water se... more This paper presents the simulation of a social media approach to assess village domestic water services coverage by using a combination of known methods to capture placeholders. Placeholder is location based information given by local people who are familiar with a specific area due to a longer period of living in, using and managing that area. Placeholders as such represent experiences and perceptions of local people. This simulation has been realized during 2011-2012 in the Kondoa district of Dodoma region Tanzania to find out in what way local communities may support water services given the options of upcoming mobile technologies. Simulation has been done by collecting data through sketch mapping, geocoded transect walk, focus group discussion and cross-checked by interviews. Results of the simulation show that this type of community water service mapping supports collection and validation of relevant, accurate and representative information on water service coverage at village ...
The book is the second volume in the Research in Urbanism Series of IOS Press and is about the co... more The book is the second volume in the Research in Urbanism Series of IOS Press and is about the combination of landscape research and planning, visual perception and Geographic Information Science. It offers clues for visual landscape assessment of spaces in cities, parks and rural areas. In that respect, it extends the long tradition in the Netherlands on physiognomic landscape research and shows the state of the art at this moment. ‘Exploring the Visual Landscape’ offers important clues for theory, methodology and application in research and development of landscapes all over the world, from a specifically Dutch academic context. It showcases possible ways of getting a grip on themes like: landscape openness, cluttering of the rural landscape, high-rise buildings in relation to cityscape, historic landscapes and motorway panoramas. ‘Exploring the Visual Landscape’provides a wide range of insights into the psychological background of landscape perception, the technical consideration...
In this paper we present the outline and usability of Google Earth visualization of Sustainable O... more In this paper we present the outline and usability of Google Earth visualization of Sustainable Outlook (GESO), a tool to prepare a multi-layered visualization of land use changes. The land use changes are the results future outlook studies of the Netherlands Environmental Assessment Agency. GESO aims an effective, easy and low cost way to study Sustainable Outlook data via an interactive 3D visualization that integrates the land use icon and landscape feature approach as presented in previous studies. The concept, implementation and usability of GESO are explained, concluded and discussed. The paper starts to explain the context of GESO and the intention to visualize 3-dimensionally land use changes (Al-Kodmany, 2001; Borsboomvan Beurden, 2006; Lammeren, 2005). Out of this context the concept of GESO architecture is presented. Amongst other functions it combines two Dutch authorized datasets, national DEM and the national topography, into a semi-3D dataset. Secondly the tool transf...
Journal of the American Mosquito Control Association, 2020
ABSTRACTThe detection of Aedes albopictus in Lucky bamboo (Dracaena sanderiana) greenhouses and A... more ABSTRACTThe detection of Aedes albopictus in Lucky bamboo (Dracaena sanderiana) greenhouses and Ae. atropalpus at used tire importers illustrates that the Netherlands is exposed to the risk of introductions of invasive mosquito species (IMS). In this study we implemented a risk-based and adaptive surveillance (2010–16) in order to detect introductions and prevent potential proliferation of IMS at these locations. Results at Lucky bamboo greenhouses show that interceptions of Ae. albopictus occurred every year, with 2010 and 2012 being the years with most locations found positive for this species (n = 6), and 2015 the year with the highest percentage of positive samples (4.1%). Furthermore, our results demonstrate that Ae. japonicus can also be associated with the import of Lucky bamboo. At used tire companies, IMS were found at 12 locations. Invasive mosquito species identified were Ae. albopictus, Ae. atropalpus, Ae. aegypti, and Ae. japonicus, of which Ae. albopictus has been foun...
Applying underwater released exhaust gas as air lubrication along the ship hull to reduce the ene... more Applying underwater released exhaust gas as air lubrication along the ship hull to reduce the energy consumption is under development. However, this direct emission to the water could pose a risk to the local marine environment, especially in shipping-dense areas. Specifically, CO2, a dominant component in the exhaust gas, has the potency to enhance algal blooms and cause acidification. This study provides the first relative risk assessment of ships with underwater release exhaust gas systems on a global scale, taking into account local water conditions and shipping intensity. Risk was characterized for 262 marine ecoregions by plotting the expected CO2 emission from ships to water against the estimated vulnerability to acidification and algal blooms. The vulnerability of each ecoregion was assessed based on background dissolved inorganic carbon (DIC) level, chlorophyll-a concentrations and total alkalinity. The results reveal that areas with relatively high vulnerability are mainly...
BackgroundIn the Netherlands, Aedes albopictus has been found each year since 2010 during routine... more BackgroundIn the Netherlands, Aedes albopictus has been found each year since 2010 during routine exotic mosquito species surveillance at companies that import used tires. We developed habitat suitability models to investigate the potential risk of establishment and spread of this invasive species at these locations. MethodsWe used two methodologies: first, a species distribution model based on the maximum entropy modelling approach (MaxEnt) taking into consideration updated occurrence data of the species in Europe, and second, a spatial logic conditional model based on the temperature requirements of the species and using Land Surface Temperature data (LST model). For model output comparison, we extracted the results of both models accordingly to the spatial extent of the Netherlands. ResultsResults obtained with the MaxEnt model at European level accurately reflect the observed current distribution of the species and also depicts moderately low values in parts of the Netherlands, ...
Abstract Agricultural extension in sub-Saharan Africa has often been criticised for its focus on ... more Abstract Agricultural extension in sub-Saharan Africa has often been criticised for its focus on linear knowledge transfer, and limited attention to systemic approaches to service delivery. Currently, the region is experiencing a new-ICT revolution and there are high expectations of new-ICTs to enhance interaction and information exchange in extension service delivery. Using an innovation systems perspective, we distinguish the roles demand-articulation, matching demand and supply, and innovation process management for innovation-intermediaries. The study explores literature on how new-ICT may support these roles, with specific interest in the possibilities of environmental monitoring and new forms of organisation enabled by enhanced connectivity. In order to contribute to the understanding of this area, the paper reports on a comparative study of two new-ICT platforms embedded in Ghanaian public and private extension organisations respectively. We assess the roles that these platforms (aim to) support, and document achievements and constraints based on interviews with extension staff and farmers. The findings indicate that while both platforms aim to support innovation-intermediation roles the focus areas and level of detail differ due to diverging organisational rationales to service delivery. In addition, we see that new-ICTs' potential to support innovation-intermediation roles is far from realised. This is not due to (new) ICTs lacking the capacity to link people in new ways and make information accessible, but due to the wider social, organisational and institutional factors that define the realisation of their potential. Therefore, more conventional modes of interaction around production advice and also credit provision continue to be dominant and better adapted to the situation. However, beyond the two platforms that were developed specifically by and for the extension organisations, there were indications that more informal and self-organised new-ICT initiatives can transform and enhance interaction patterns in innovations systems to achieve collective goals through standard virtual platforms such as WhatsApp and Telegram.
Uploads
Papers by Ron van Lammeren